Keyword: EPICS
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THPFAV005 LCSL-II Cryomodule Testing at Fermilab cryomodule, cavity, LLRF, operation 741
 
  • E.R. Harms, B.E. Chase, E. Cullerton, B.D. Hartsell, J. Hurd, M.J. Kucera, F.L. Lewis, A. Lunin, J.N. Makara, D.L. Newhart, D.J. Nicklaus, P.S. Prieto, J. Reid, R.P. Stanek, R. Wang
    Fermilab, Batavia, Illinois, USA
  • A.L. Benwell
    SLAC, Menlo Park, California, USA
  • C. Contreras-Martinez
    FRIB, East Lansing, Michigan, USA
  • C.M. Ginsburg
    JLab, Newport News, Virginia, USA
 
  Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.
Cold powered testing of all LCLS-II production cryomodules at Fermilab is complete as of February 2021. A total of twenty-five tests on both 1.3 GHz and 3.9 GHz cryomodules were conducted over a nearly five year time span beginning in the summer of 2016. During the course of this campaign cutting-edge results for cavity Q0 and gradient in continuous wave operation were achieved. A summary of all test results will be presented, with a comparison to established acceptance criteria, as well as overall test stand statistics and lessons learned.
 
poster icon Poster THPFAV005 [1.379 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2021-THPFAV005  
About • Received ※ 22 June 2021 — Revised ※ 24 November 2021 — Accepted ※ 05 January 2022 — Issue date ※ 01 March 2022
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THPCAV006 Recent Activities Regarding 9-Cell TESLA-Type Cavities at KEK cavity, controls, niobium, superconducting-RF 792
 
  • M. Omet, R. Katayama, K. Umemori
    KEK, Ibaraki, Japan
 
  In this contribution we report on two topics regarding recent activities on 9-cell TESLA-type cavities at the High Energy Accelerator Research Organization (KEK). First, we give an overview of the inner surface treatments and vertical test (VT) results of four fine grain 9-cell TESLA-type cavities over the last one and a half years. Secondly, we report on the upgrade of the VT DAQ system at the Superconducting RF Test Facility (STF) at KEK. In this upgrade, most components of the VT system were integrated in an EPICS control system. Based on Control System Studio (CSS) and Python a new user interface was created, improving the workflow during and after VTs at STF.  
poster icon Poster THPCAV006 [1.748 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2021-THPCAV006  
About • Received ※ 18 June 2021 — Revised ※ 26 August 2021 — Accepted ※ 23 November 2021 — Issue date ※ 04 March 2022
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